Automobile transmission mechanism.



v. LINK, AUTOMOBILE TRANSMISSION MECHANISM.

APPLICATION FILED JUNE ZI. I9l2.

PHIQII'BGCI July 4, 1916.

2 SHEETSSHEET lawua'nboz [/M/CE/VT Lav/n V. LINK.

AUTOMOBILE TRANS M I S SION MECHANISM.

kPPLICATION FILED JUNEZI. 912.

Pawnted J uly 4, 1916, V

' SHEETS-SH ET 2 lwumwoi 'ing at Detroit, in the county of Wayne andState of -M1ch1gan, have invented certain -"11'8W and usefulImprovements in-Automoi 'eaisee. 7

To 'aZZ whom it may concern p Be it known that I, VINCENT LINK, acitizenof the United States of; America, resid- -bile TransmissionMechanism, of which the '--following is a specification,reference being,ghad therein to theaccompanymg drawlngs.

' This invention relates to transmission mechanismfor automobiles andmore par- "ticularly to an emergency gearing for'lockingfdifferentialmechanism whereby acci- "dent that"disableseither drive shaft ofthe."dilferential does "notcompletely disable the car. 7 Another feature ofthe invention is an ar- "F ra'rigement'of the service brake whereby itis p instantly accessible for inspection, repair-i andwhe'reby alllubricants are kept away and renewal of-'-'the brake drum and shoe fromthe friction faces of the brake;

The mvention consists in the matters here finafter' set forth, and moreparticularly @2 p Referring to the drawings, Figure 1 is a pointed"out'in' the appended claims.

. e View tl i section, of a mechanism embodying features of theinvention; and

I Fig. 2 is a view in end'elevation thereof. 1' of. adifferentialgearlng'of any preferred In the drawings an outer-=rotary member f type,has tubular extensions or sleeves2 each ournaled in suitable frictionand thrust bearings 3 in an outer casing 4. A follower pinion 5 'thatrotates the member 1 is in mesh with a driv'e gear 6 secured to theinner e'r'i'd of the follower or transmission shaft 7 which-extendsthrough a suitable friction bearing. 8" in the wall of the main casing4:

ing sleeve 13 preferably integrally formed on the main casing 4:. A twopart transmission shaft of the diflerentialhas one member 14 suitablyjournaled in the sleeve '13 and another arm 15 similarlyrotatablysecured in suitable-bearings in the yoke 10, the inner ends of themembers being journaled in the sleeves 2 and operatively con-Specificaittionof Letters Paten lt."

Application :filed June 21, 1912. Serial No. 704,962. I

ber ofthe differential gearing. myoke, 25 engaging the clutch sleeve 22has pins 26 or like members engaging a groove ferential member sleeve.

UNITED srarrns PATENT orrron.

auroiiron'rnn TRANSMISSION MECHANISM.

nected with the member 1 through any of the usual forms of compensatinggearing. The outer'ends of these shaft members may be provided withsprocket wheels 16 in case the mechanism is used for a double "sidechain drive, or may haveprovision for re-' ceptlon of the usual tractionbearing wheels I of an automobile. A brake drum 17 is secured on thesleeve 2 within-the yoke 10 and is encircled by any preferred form ofbrake band indicated at 18 carried by the yoke in the usualmanner andarranged to be tightened by a lever 19 and brake rod 20 continuedto theoperators station.

A clutch sleeve 22 is non-rotatably reciprocable onthe shaft member 15and is provided with end notches 28 adapted to engage with matingteeth24 on the adjacent end of the tubular member 2, or is otherwise arrangedto interlock with the driving'mempreferably formed byv a pair ofperipheral flanges 27 .on one end of the gudgeon sleeve. The yoke ispivoted on a suitable stud 28 and may be shifted longitudinally by"means of a rock arm 29 and an operating rod or link 30 carrled to anyconvenient point.

.In order to insure accuracy ofaljinenient the yoke 10 is formedintegrally'on'thejend plate 81 of the casing l and the'latterfl'ias aslight circular centering flange 82'entering a corresponding rabbet inthe face of a mar- Patented July 4, 1916.-

A slotted ginal' flange 33jformed, on the adjacent face of this endplate 31. ,To prevent oil or other lubricant from working out onto thebrake 'drum a hub 35 on the end plate which houses the bearing 3 isarranged to closely encircle the member 2 beyond the bearing and hold awasher 36 aroundthe member.

In operation the differential mechanism transmits motion through the twomembers of its shaft in the usual manner so long as theclutch sleeve isdisengaged from the dif- If, however, for any reason one of theconnections on the end of the shaft breaks, as is liable to occur witha-jack shaft and side drive construction, the operator may positivelylock one of the members of the shaft to rotate with the diflerem tialdriving members by'meanslof the clutch sleeve. This causes the two;parts of the shaft to turn together so that the vehicle to which themechanism is applied is driven temporarily through the unbroken connec-.adj acent tion. This prevents crippling of the vehicle through breakageof one of the traction wheel connections.

Another feature of the simplicity inasmuch as the transmission casingand the main easing of the differential together with one of the tubularshaft extensions are in one, the yoke frame support ing the brake drumbeing so constructed as to be held in true alinementwhen. placed inposition on the casing end. The brake drum and strap are'outside thetransmission easing so that lubricant cannot reach them and consequentlythey are always effective. Furthermore the yoke permits the readyremoval and replacement of the brake strap which of course isnecessarily renewed at regular intervals.

Obviously, changes in the details of construction may be made I withoutdeparting from the spirit of the invention and I do not care to limitmyself to any particular form or arrangement of parts;

What I claim as my invention is:-

1. In an automobile, an outer casing having a tubular extension, a yokeon the casing, a tubular extension thereon in axial alinement with thecasing extension, a. differential gear casing having oppositelyextending sleeves journaled in the outer casing in axial alinement withthe outer casing extensions, a twopart shaft journaled in the extensionwhose ends inside the gear casing are con nected to the latter to rotatedifierentially, a shaft member in the outer casing connected to the gearcasing to positively rotate the latter, a brake drunr on one of the gearcasing sleeves outside the outer casing, and? means on the yoke forfrictionally engaging the drum.

2. In an automobile, an outer casing having a tubular extension, a yokeon the casing, a tubular extension thereon in axial alinement with thecasing extension, apair of oppositely disposed end thrust hearings inthe outer casing in axial alinement with. the

casing extensions, a differential gear casing having oppositelyextending sleeves journaled in the hearings in axial alinehient with theouter sleeves, a two-part shaft ournaled in the extensions whoseadjacent ends inside invention is its adapted to non-rotatably massesthe gear casing are connected to the latter to rotate outer casingconnected to the gear casing to positively rotate the latter, a brakedrumson one of the gear casing sleeves outside the outer casing, andmeans on the yoke for frictionally engaging the drum.

3. In an automobile, an outer casing having a tubular extension, a yokeon the casing, atubular extension thereon in axial alinement with thecasing extension, a differential gear casing having oppositely extendingsleeves journaled on the outer casing in axial alinement with the outercasing extensions, a two-part shaft journaled in the extensionswhoseadjacent ends inside the gear casing are connected to the lattertially, a drive shaft in the outer casing connected to the gear casingto positively rotate the latter, a clutch sleeve non-rotatablyreciprocable on one of the shaft members interlock with the gear casing,and means for shifting the sleeve.

4. In an automobile, an outer casing having a tubular extension, a yokeon the casing, a tubular extension thereon in axial alinement with thecasing extension, a differentialgear casing having oppositely extendingsleeves journaled on the outer casingin axial alinement with the outercasing extensions, a two-part shaft journaled in the extensions whoseadjacent ends inside the gear casing are connected to the latter torotate. differentially, a drive shaft in the outer casing connected tothe gear casing to positively rotate the latter, a clutch sleevenon-rotatably reciprocable on one of the shaft members adapted tonon-rotatably interlock with the gear casing, and means for shifting thesleeve, the shaft ends being so connected that they rotate positivelyatthe same speed when one of the shaft members is positively interlockedwith the gear casing.

In testimony whereof I afiix my signature in presence of two witnesses.

O'rro F. BARTI-lEL, ANNA M. Donn.

differentially, a drive shaft in the to rotate differen

